How can I set NSZombiesEnabled in XCode4?

How can I enable NSZombiesEnabled in XCode4? I used to use this argument to debug EXC_BAD开发者_C百科_ACCESS in XCode3. Not sure where to do it in XCode4.

1. Go to Executables of your application (Shown left side of your window)
2. Expand it and double click on your application.
3. Select Argument tab and insert NSZombiesEnabled and set its value to TRUE. (In second section)

Here is the example too...Set NSZombiesEnabled